Opti-Glutamine Powder 300g

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Glutamine is the most abundant amino acid in the body and is required by every muscle in the body to help maintain cellular health and tissue repair. OPTI-GLUTAMINE is 100% Pure Unflavoured Glutamine Powder that helps reduce muscle soreness & rebuild muscle.

Enhanced Endurance, Increased Power & Faster Muscle Recovery with Opti-GlutamineTM Powder

Glutamine is the most abundant amino acid in the body, comprising more than 60% of the free amino acid pool in skeletal muscle. Glutamine is required by every muscle in the body, and is one of the most important building blocks in forming the proteins that maintain cellular health and tissue repair. Glutamine is a conditionally essential amino acid which means that for more active people, the daily glutamine requirement exceeds the small amount that the body can produce. The majority of it must come from the dietary sources. It is present only in small amounts in vegetables and pulses and therefore makes Opti-Glutamine an essential nutritional supplement.

  • Opti-GlutamineTM provides a pure, highly bioavailable, instantised powder that mixes easily to provide a premium supplement which may help reduce muscle soreness & rebuild muscle tissue
  • Glutamine supplementation has gained huge importance through studies that have revealed the role it plays in stimulating muscle growth & its anti-catabolic effects (prevents muscle breakdown)
  • Prevents the occurrence of a glutamine deficit that can occur after high intensity exercise which can impede muscle recovery time
  • Stimulates release of HGH (Human Growth Hormone) to increase the circulating levels in the blood which promotes protein synthesis & muscle growth
  • Scientifically proven to cause a shift from glucose metabolism to fatty acid oxidation to increase the rate of lipolysis
  • An essential supplement for high intensity, endurance sports such as running and cycling as it promotes muscle hypertrophy & replenishes muscle glycogen stores
  • Additionally supports a strong immune system preventing infection and disease & acts as a neurostimulant to improve cognitive function and elevate mood

The Opti-GlutamineTM Guarantee – What Makes Opti-GlutamineTMBetter Than Other Supplements?

Opti-Glutamine™ prides itself on three key qualities that we believe set Opti-GlutamineTM above its competitors:

  • Purity – Opti-Glutamine™ presents this supplement in its purest, unprocessed form to ensure the active components have the highest possible efficacy.
  • Bioavailability – Opti-Glutamine™ provides a highly absorbable source of glutamine which can rapidly be transported to muscle to be assimilated into proteins.
  • Quality – Opti-Glutamine™ guarantees that only the highest quality sources are used to formulate this supplement to ensure maximum efficacy of this premium quality product.

Opti-Glutamine™ maintains and promotes an increase in muscle mass which raises the basal metabolic rate. Additionally, supplemented glutamine fuels the white blood cells of the immune system, aids digestive health and promotes synthesis of antioxidants.

Opti-Glutamine™ is particularly effective for those undergoing training for endurance sports such as long distance running or cycling and can help to reduce the incidence of cramps caused through repetitive strain. It is also recommended for elderly people who suffer from cramps and regular muscle pain as a natural alternative to chemical pain killers.

The Science Behind Opti-GlutamineTM

Glutamine has been the subject of extensive scientific research and has been proved to facilitate growth and recovery of muscle making it an essential supplement to prevent catabolism of muscle tissue after work-outs. Glutamine is known as the healing supplement and many clinical studies have shown that glutamine supplementation increases the recovery time after high intensity exercise.

Glutamine has been shown to increases muscle mass, and enable improved performance. In a study, high intensity exercise was used to measure time to exhaustion as a measure of power and endurance. The graph below shows that the time to exhaustion is higher in the group taking glutamine supplements compared to those that are not taking a supplement.

Furthermore, after a second test to exhaustion was conducted 24 hours following the first. The results show that not only did the glutamine supplemented group have a consistently higher time to exhaustion than the placebo group, but the real time to failure increased. This evidence proves that glutamine supplements increase power and endurance.

The results of another study confirmed that the mechanism by which glutamine stimulates rapid muscle recovery and growth is through stimulating the release of HGH (Human Growth Hormone). The concentration of growth hormone in the blood over a period of 90 minutes after glutamine supplementation was monitored. Compared to the control group who did not take any supplements and did not see a significant change in blood growth hormone levels, glutamine caused an almost three-fold increase in plasma level of growth hormone.

The same study showed that glutamine supplementation causes a shift in glucose metabolism to oxidation of free fatty acid which is represented as a reduction in the blood plasma levels of free fatty acids.

Strong scientific evidence has proved glutamine supplements to effectively increase muscle recovery and growth by increasing the release of growth hormone and accelerate the rate of lipolysis.

When to take Opti-GlutamineTM

Opti-GlutamineTM Power allows you the flexibility to alter you daily intake depending on workout intensity. The best time to take Opti-Glutamine™ is after a workout, when the body's glutamine stores are lowest. It should be taken soon after intense physical activity to prevent a glutamine deficit which can lead to muscle catabolism.

The effects of Opti-Glutamine™ can be maximised by combining it with WheyMax™. Opti-Glutamine™ stimulates muscle anabolism which enables full, effective use of WheyMax™ which provides a complete, highly bioavailable source of protein. Together they work synergistically work to increase muscle tissue recovery & growth.

Vegetarian Society ApprovedSuper VitaminsMade in the UK by Experts



The nutritional specialists that have been part of the formulation process have recommended that a single serving of Opti-Glutamine should be taken 1 to 2 times daily or as direct by your healthcare professional or personal trainer.



  • This is a food supplement: This product should not be used as a substitute for a varied diet.
  • Always read all product packaging and labels prior to use
  • If you are taking any prescription medication, or you have a medical condition or specific concerns about the suitability of our products, always consult your GP or Pharmacist prior to taking these supplements.
  • Please do not exceed the recommended daily intake.
  • Store in a cool dry place and keep away from children at all times.
  • Do not use if the seal is broken.
  • Pregnant or lactating women should consult a Doctor before using this product.
  • Image is for illustration purposes only.
Shipping & Delivery Shipping & Delivery


We are currently in the process of moving warehouse. Please allow 7-10 working days for UK delivery & 10-21 working days for International orders. Our standard delivery times do not currently apply.


Free Delivery

  • We offer FREE tracked and signed-for delivery on all orders over £40 when delivering to UK mainland destinations.

Standard Delivery

  • Our Standard Delivery service is available on all UK mainland orders below £40 and 15kg in weight. All orders are sent using the Royal Mail’s tracked and signed-for service.
  • Standard Delivery costs are £3.99 per order, with deliveries arriving within 3-5 working days of your order being dispatched.

Next Day Delivery

  • Our Next-Day Delivery service (Mon-Fri) is offered through DHL and is only available for UK mainland customers. The maximum weight per parcel is 30kg.
  • Next Day Delivery costs are £5.95 per parcel, with deliveries being dispatched the same day using an overnight courier.
  • If your order is placed before 2pm, it should arrive the following day (subject to stock availability and payment checks being completed). Please note that this only applies to orders placed between Monday and Thursday.
  • Orders placed after 2pm on a Thursday will most likely be dispatched on Monday, so delivery is likely to take place on Tuesday.


  • Your order should reach your home within 7-14 working days of the order confirmation being received.
  • Delivery charges to China will vary depending on the weight and size of your order.
  • Registered customers can determine the delivery cost after placing items into the checkout basket – and before confirmation of purchase.
  • Custom tax and/or import duties will need to be paid by the customer once the order reaches China. We recommend contacting your local customs office or tax authority for more information.


  • Delivery charges to Europe and the Rest of the World will vary depending on the destination, weight and content of your order.
  • Registered customers can determine delivery costs after placing items into the checkout basket – and before confirmation of purchase.
  • Deliveries are typically received with 7-14 days of dispatch.
  • EU customers may need to pay custom tax and/or import duties once the order reaches your country. We recommend contacting your local customs office or tax authority for more information.

Customer Reviews

Based on 1 review

A good product, helps post training. After taking this I feel ready to train again.